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Toxic chemicals in the sap cause photosensitivity, making the skin extremely sensitive to sunlight and often leading to severe sunburn and scars.

Victims suffer from huge blisters which can take a long time to heal and can even cause permanent damage or blindness, especially in children.

Giant hogweed was introduced to Britain from Russia by botanists who were impressed with the plant’s striking appearance during the 19th Century.

The plants were originally grown in gardens but quickly escaped cultivation and are now naturalised in the UK and most of Europe.

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The recent heatwave has led to the resurgence of giant hogweed

Giant Hogweed: Britain's most dangerous plant

Mon, September 18, 2017

A member of the carrot family, Giant Hogweed was introduced to the UK in the 19th century. In recent weeks, the toxic plant has been spreading across the country, leaving people with painful blisters, rashes and serious burns.